Inelastic cotunneling through a long diffusive wire

Details Inelastic cotunneling through a long diffusive wire Inelastic cotunneling through a long diffusive wire

2008-09-08

arxiv.org/abs/0809.1325v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Calculational mistake is corrected: the power-law exponent in Eq.(6) is found to be independent on the position of contacts wi

Scientific paper

We show that electron transport through a long multichannel wire, connected to leads by tunnel junctions, at low temperatures and voltages is dominated by inelastic cotunnelling. This mechanism results in experimentally observed power-law dependence of conductance on temperature and voltage, in the diffusive regime where usual Coulomb anomaly theory leads to exponentially low conductance. The power-law exponent is proportional to the distance between contacts.

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